Ardiansyah, Prama. “POLAR STORAGE METHOD AS ONE QUALITY CONTROL OF RAW MATERIAL FEEDBACK”. IJTI International Journal of Transportation and Infrastructure eISSN 2597-4769 pISSN 2597-4734 1, no. 2 (March 9, 2018): 52-56. Accessed December 5, 2025. http://jurnal.narotama.ac.id/index.php/ijti/article/view/631.